Southern Ag CROSSBOW32 Weed & Brush Killer, 32oz-1 Quart Cro

The Verdict

If you’ve got a fence line strangled by wild blackberry, a drainage ditch full of poison ivy, or a patch of multiflora rose that laughs at your string trimmer, you don’t need another “weed killer.” You need a brush killer. Southern Ag’s Crossbow32 is the kind of product land managers and farmers have relied on for years — and the 4.6-star average across 229 ratings suggests weekend warriors are catching on.

Here’s what you actually get when that quart bottle shows up.

What’s in the box
A single 32-ounce bottle of concentrated Crossbow specialty herbicide. That’s it. No sprayer, no measuring cup, no gloves. But here’s the math that matters: this concentrate mixes at 2 to 4 ounces per gallon of water, meaning one quart treats anywhere from 8 to 16 gallons of finished spray. For perspective, a typical 32oz ready-to-spray bottle from a big-box brand covers maybe 1,000 square feet. This will cover your entire acreage, multiple times, for a fraction of the per-gallon cost.

Performance: what it actually kills
Crossbow’s active ingredients are triclopyr and 2,4-D — a combination specifically designed for woody plants. Users consistently report it nukes hard-to-kill species that glyphosate (plain Roundup) only stunts. As one reviewer put it: “Took out a 15-foot patch of blackberry that had been here 20 years. Brown in a week, dead to the roots in a month.” Another mentioned it handled poison ivy after two applications, which is about as high a compliment as any herbicide gets.

The key is application timing. Spray when plants are actively growing (spring through early fall), and you’ll see wilting in 3-7 days. It’s rainfast within 2 hours — a real advantage if you’re working around unpredictable weather.

What buyers consistently praise
Beyond the kill power, the standout theme in reviews is value. Multiple purchasers pointed out this same chemical is rebranded and sold at double the price elsewhere. One user noted, “Same active ingredients as name-brand Crossbow you’ll find at farm supply stores — half the price.” The concentrate also means you control the strength; for light weed pressure, 2 oz per gallon works fine, while heavy brush calls for the 4 oz rate.

Where it falls short — read this before buying
This is not a general-purpose lawn weed killer. The 2,4-D component makes it volatile, especially in heat over 85°F. Drift can curl the leaves of your tomatoes, roses, or shade trees a hundred feet away. Several reviewers warned they learned this the hard way — one said, “Killed my neighbor’s hydrangeas when the wind shifted. Use a dedicated sprayer and only on still days.”

Also, state restrictions are real. Crossbow contains dicamba, which is regulated or heavily restricted in certain states (including parts of the Midwest and Northeast). Check your state’s agricultural department website before ordering. If you live in a restricted state, this product may be cancelled at the warehouse, and the seller can’t override that.

Who should buy this

• Rural or suburban landowners with fence lines, ditches, or overgrown back acreage
• Hobby farmers clearing brush for pasture or trails
• Anyone battling poison ivy or blackberry who’s tired of re-applying weak sprays
• Budget-conscious buyers who want commercial-grade chemistry without the boutique price

Skip it if you only need to spot-treat dandelions in a manicured lawn — you’ll overkill and risk collateral damage.

FAQ: Three questions shoppers actually ask
Q: Can I mix this in a pump sprayer and use it around my garden?
A: Only if you use a dedicated sprayer and spray on a completely calm day. Even then, keep it at least 50 feet away from any edible plants. For garden-adjacent use, consider a wipe-on applicator instead.

Q: How long before I can replant grass or trees in treated areas?
A: Crossbow has little to no soil residual activity. You can typically reseed grass after 3-4 weeks, and woody ornamentals can go in after a month, assuming the spray didn’t drift onto them.

Q: Will one quart be enough for my half-acre?
A: At the standard 3 oz per gallon rate, you get about 10 gallons of spray, covering roughly 10,000-15,000 square feet of dense brush. For a half-acre of heavy growth, you’ll likely need two bottles.

The Verdict
Buy it if: You need to reclaim overgrown land from woody brush, vines, or brambles and want results that last more than one season. This is the product you’ll reach for year after year.

Skip it if: You live in a dicamba-restricted state, have a small ornamental garden nearby, or just want a broadleaf weed killer for your lawn.

Rating: 4.6/5 — Deducting half a star for the state-use restrictions and the drift risk that got more than one reviewer in trouble. If you read the label and respect the volatility, this is the best brush-killing value on Amazon right now.

Where to Buy

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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.